1 /*
2 * Copyright 2014, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef _VFS_PORTABLE_H_
18 #define _VFS_PORTABLE_H_
19
20 #include <portability.h>
21 #include <stdint.h>
22 #include <stdlib.h>
23 #include <sys/vfs.h>
24
25 typedef __fsid_t fsid_t;
26
27 #define __STATFS64_BODY_PORTABLE \
28 uint64_t f_type; \
29 uint64_t f_bsize; \
30 uint64_t f_blocks; \
31 uint64_t f_bfree; \
32 uint64_t f_bavail; \
33 uint64_t f_files; \
34 uint64_t f_ffree; \
35 fsid_t f_fsid; \
36 uint64_t f_namelen; \
37 uint64_t f_frsize; \
38 uint64_t f_flags; \
39 uint64_t f_spare[5];
40
41
42 struct StatfsPortable { __STATFS64_BODY_PORTABLE };
43 typedef struct StatfsPortable Statfs64Portable;
44
45 #undef __STATFS64_BODY_PORTABLE
46
statfs_n2p(const struct statfs * pn,struct StatfsPortable * pp)47 static void statfs_n2p(const struct statfs* pn, struct StatfsPortable* pp)
48 {
49 memset(pp, '\0', sizeof(struct StatfsPortable));
50 pp->f_type = pn->f_type;
51 pp->f_bsize = pn->f_bsize;
52 pp->f_blocks = pn->f_blocks;
53 pp->f_bfree = pn->f_bfree;
54 pp->f_bavail = pn->f_bavail;
55 pp->f_files = pn->f_files;
56 pp->f_ffree = pn->f_ffree;
57 memcpy(&pp->f_fsid, &pn->f_fsid, sizeof(int)*2);
58 pp->f_namelen = pn->f_namelen;
59 pp->f_frsize = pn->f_frsize;
60 pp->f_flags = pn->f_flags;
61 #ifdef __mips__
62 memcpy(&pp->f_spare, &pn->f_spare, 4);
63 #else
64 memcpy(&pp->f_spare, &pn->f_spare, 5);
65 #endif
66 }
67
WRAP(statfs)68 int WRAP(statfs)(const char* path, struct StatfsPortable* stat)
69 {
70 struct statfs target_stat;
71 int ret = REAL(statfs)(path, &target_stat);
72 statfs_n2p(&target_stat, stat);
73 return ret;
74 }
75
WRAP(statfs64)76 int WRAP(statfs64)(const char* path, Statfs64Portable* stat)
77 {
78 return WRAP(statfs)(path, stat);
79 }
80
WRAP(fstatfs)81 int WRAP(fstatfs)(int fd, struct StatfsPortable* stat)
82 {
83 struct statfs target_stat;
84 int ret = REAL(fstatfs)(fd, &target_stat);
85 statfs_n2p(&target_stat, stat);
86 return ret;
87 }
88
WRAP(fstatfs64)89 int WRAP(fstatfs64)(int fd, Statfs64Portable* stat)
90 {
91 return WRAP(fstatfs)(fd, stat);
92 }
93
94 #endif /* _VFS_PORTABLE_H */
95